diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 0ea3f46..27f874e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -26,7 +26,7 @@ jobs:
     - name: Install Qt
       uses: jurplel/install-qt-action@v3
       with:
-        version: '6.6.3'
+        version: '6.6.1'
         setup-python: 'false'
         # mirror: 'http://mirrors.ocf.berkeley.edu/qt/'
     - name: Install python dependencies
diff --git a/requirements.txt b/requirements.txt
index 05bd35f..7dd6256 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-PyQt6~=6.6.3
+PyQt6~=6.6.1
 PyQt6-sip~=13.6.0